What model number?
Verify you have a supported TV.
From Video On Demand Overview:
- Smart TVs (LG 4K/UHD [webOS 3.0+], Samsung 2016+ UHD)
Also, verify your client version. Current version for webOS 2+ TVs is 4.29.6. Use the version displayed in the Plex app, not in the LG store.
